94 research outputs found
Decarbonylative heck olefination of enol esters: Salt-free and environmentally friendly access to vinyl arenes
No full textDecarbonylierende Heck-Olefinierung von Enolestern: ein salzfreier und umweltfreundlicher Zugang zu Vinylarenen
No full textNew synthesis of biaryls via Rh-catalyzed decarbonylative Suzuki-coupling of carboxylic anhydrides with arylboroxines
No full textDecarbonylative heck olefination of enol esters: Salt-free and environmentally friendly access to vinyl arenes
No full textPd-catalyzed decarbonylative olefination of aryl esters: Towards a waste-free heck reaction
No full textLewis acids as highly efficient catalysts for the decarboxylative esterification of carboxylic acids with dialkyl dicarbonates
No full textPd-catalyzed decarbonylative Heck olefination of aromatic carboxylic acids activated in situ with di-tert-butyl dicarbonate
No full textThe first protocol for a direct Heck olefination of aromatic carboxylic acids has been developed. By treatment with commercially available di-tert-butyl dicarbonate, the carboxylic acids are converted in situ into the mixed anhydrides, which in the presence of a palladium catalyst react with olefins to give styrene derivatives. As by-products, only volatile CO and CO2, along with tert-butanol are formed, making the work-up of the reaction products particuarly easy. A mixture of PdCl2, LiCl and gamma-picoline was identified to be the most effective catalyst system
Decarbonylierende Heck-Olefinierung von Enolestern: ein salzfreier und umweltfreundlicher Zugang zu Vinylarenen
No full textRegiocontrolled Ru-catalyzed addition of carboxylic acids to alkynes: practical protocols for the synthesis of vinyl esters
No full textNew Pd-catalyzed selective reduction of carboxylic acids to aldehydes
No full textA catalyst generated in situ from palladium acetate and tricyclohexylphosphine efficiently catalyzes the reduction of carboxylic acids with sodium hypophosphite in the presence of pivalic anhydride to give aldehydes with high selectivity. The low cost and convenient handling of the reagents makes this process a valuable alternative to hydrogenations and metal hydride reductions
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